{"id":"CVE-2026-74865","state":"PUBLISHED","title":"Authentication Bypass in sogo_yhn","description":"sogo_yhn configures SOGo with a parameter \"SOGoTrustProxyAuthentication=YES\". This causes the password to be bypassed during HTTP Basic authentication. An unauthenticated attacker who provides the username of an existing user and any arbitrary password can successfully log in to that user's account.\n\n\nThis issue was fixed in version 5.8.0~ynh9.","publishedAt":"2026-09-30T12:02:40.553Z","updatedAt":"2026-09-30T12:50:23.238Z","severity":{"score":9.2,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"CERT-PL"},"assigner":"CERT-PL","products":["YunoHost-Apps sogo_yhn"],"affected":[{"vendor":"YunoHost-Apps","product":"sogo_yhn","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.8.0~ynh9","versionType":"custom"}],"repo":"https://github.com/YunoHost-Apps/sogo_ynh"}],"references":["https://cert.pl/en/posts/2026/09/CVE-2026-74864","https://forum.yunohost.org/t/sogo-critical-vulnerability-fixed-in-5-8-0-ynh9/42699"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74865.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74865","state":"PUBLISHED","datePublished":"2026-09-30T12:02:40.553Z","dateUpdated":"2026-09-30T12:50:23.238Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2026-08-17T10:19:51.723Z"},"containers":{"cna":{"title":"Authentication Bypass in sogo_yhn","descriptions":[{"lang":"en","value":"sogo_yhn configures SOGo with a parameter \"SOGoTrustProxyAuthentication=YES\". This causes the password to be bypassed during HTTP Basic authentication. An unauthenticated attacker who provides the username of an existing user and any arbitrary password can successfully log in to that user's account.\n\n\nThis issue was fixed in version 5.8.0~ynh9."}],"affected":[{"vendor":"YunoHost-Apps","product":"sogo_yhn","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.8.0~ynh9","versionType":"custom"}],"repo":"https://github.com/YunoHost-Apps/sogo_ynh"}],"references":[{"url":"https://cert.pl/en/posts/2026/09/CVE-2026-74864","tags":["third-party-advisory"]},{"url":"https://forum.yunohost.org/t/sogo-critical-vulnerability-fixed-in-5-8-0-ynh9/42699","tags":["issue-tracking"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":9.2,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639 Authorization bypass through User-Controlled key","type":"CWE"}]}],"providerMetadata":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2026-09-30T12:02:40.553Z"},"tags":["x_open-source"],"credits":[{"lang":"en","value":"Przemysław Knycz WeKrwi.IT  https://github.com/djrzulf","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-30T12:50:17.073137Z","id":"CVE-2026-74865","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T12:50:23.238Z"}}]}}}